Blastoise-EX XY Black Star Promos #XY30
Blastoise-EX is a Promo Pokémon card from XY Black Star Promos (#XY30), illustrated by Eske Yoshinob. It's a Basic EX Water-type Pokémon with 180 HP, weak to Grass ×2. Its current blended market value is $10.83 ungraded, with a PSA 10 worth around $359 — a gem-mint grading premium of roughly 33× the raw value. Prices are aggregated across marketplaces — raw and graded, updated daily and shown in your local currency.
Prices last updated 2 July 2026.
| Grade | Relative value | Price |
|---|---|---|
| PSA 10 | 2 sold$359$305–$412 | |
| PSA 9 | 3 sold$54$46–$63 | |
| PSA 8 | 2 sold$30$25–$34 | |
| PSA 7 | 6 sold$20$17–$23 | |
| PSA 6 | $12$10–$18 |
Price history · raw near-mint
Recent sold prices
Real completed hammer prices from Fanatics Collect weekly and premier auctions, refreshed periodically. Grade read from the listing title.
Population across graders
Should you grade it?
after ~$73.58 grading fee → 33.1× the raw value
| Target grade | Est. value | Grading fee | Net vs raw | Multiple |
|---|---|---|---|---|
| PSA 10 | $358.56 | $73.58 | +$274 | 33.1× |
| PSA 9 | $54.46 | $70.53 | −$27 | 5.0× |
| PSA 8 | $29.94 | $70.29 | −$51 | 2.8× |
⚖️ Risk-adjusted return
Best case isn't the whole story. Weighting every grade by how often it actually happens, across 625 PSA-graded copies:
| Likely outcome | Chance | Value |
|---|---|---|
| PSA 10 | 19.4% | $359.00 |
| PSA 9 | 32.2% | $54.00 |
| PSA ≤8 | 48.5% | $11.00 |
Net = graded value − raw value − grading cost (tier fee + ~$20 round-trip shipping), using PSA fees as of 2026-06-28; the paused PSA Value tier is excluded so this isn't overstated. Gem rate is estimated from cumulative PSA population, which skews toward nicer, resubmitted copies — so it overstates the true grade rate. Treat it as a guide, not a guarantee.
We'll email you when this card's value crosses your target.
Where to buy
Cross-market prices
83% spreadCurrently 83% cheaper on Cardmarket than TCGplayer. These are independent market prices for the same card — a wide gap can mean a buying opportunity. Informational only, not arbitrage advice.
Market signal
Derived from this card's 90-day price history, recent trend and cross-market price gap. Informational, not advice.
🇪🇺 Cardmarket price · Europe
45% cheaper than the USCard text
Pokémon-EX rule: When a Pokémon-EX has been Knocked Out, your opponent takes 2 Prize cards.
Card details
Other Blastoise-EX cards
There are 6 different Blastoise-EX printings — make sure you're valuing the right one. This is XY Black Star Promos #XY30 (Promo).
More from XY Black Star Promos
Frequently asked questions
How much is Blastoise-EX (XY Black Star Promos #XY30) worth?
As of 2 July 2026, Blastoise-EX from XY Black Star Promos is worth approximately $10.83 ungraded (near-mint), and around $359 in PSA 10 gem mint. Values are blended from real Cardmarket, eBay sold and TCGplayer prices and update daily.
What is the PSA 10 price for Blastoise-EX?
A PSA 10 (gem mint) Blastoise-EX from XY Black Star Promos is worth around $359 — roughly 33× the raw ungraded value of $10.83.
Should I grade my Blastoise-EX?
A PSA 10 sells for about $359 versus $10.83 raw — roughly a 33× uplift. Grading is worth it when that premium comfortably beats the grading fee and the card is clean enough to have a real shot at a 10. See the "Should you grade it?" estimate above for net profit per grade.
Is Blastoise-EX rare?
Blastoise-EX is a Promo card from XY Black Star Promos (card #XY30), illustrated by Eske Yoshinob. Its current blended market value is $10.83 ungraded.